We recently spent $2500 on a young Black Angus bull. We put him out with the herd but he just ate grass and wouldn't even look at a cow. I was beginning to suspect he was gay, if that's possible with a bull.
Anyhow,I had the Vet come have a look at him. He said the bull was very healthy, but possible a little young, so he gave me some pills to feed him once per day.
Holy crap. The bull started to service the cows within two days. All of my cows! He even broke through the fence and bred all my neighbor's cows! He's been breeding just about everything in sight. He's like a machine!
I don't know what was in the pills the Vet gave him, but they kinda taste like peppermint.